Central City Quarry
From Underfoot
Q49404045
mine in Somerset County, Pennsylvania, United States of America
| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| site | tunnel | Allegheny Mountain Tunnel | road tunnel | Wikidata | |
| site | tunnel | Negro Mountain Tunnel | railway tunnel | Wikidata | |
| site | tunnel | Quemahoning Tunnel | railway tunnel, tunnel | Wikidata | |
| site | tunnel | Staple Bend Tunnel | railway tunnel | Wikidata | |

